Focusing lamp



Dec. 7 ,1926.

C. E. GODLEY FOCUS ING LAMP 2 Sheets-Sheet 1 Filed Dec. 28, 1925 Dee. 71926.

2 Sheets-Sheet 2 3 I eOZ'O gar/e; 5 GZW V. y

c. E. GQDLEY FOCUSING LAMP Filed Dec. 28. 1925 Patented Dec. 7, was. i

flFATrFLfl CHARLES E. GODLEY, GE DETRGIT. .MIGHIGAN, ASSIGNOR. BY MESNEASSIGNMENTS, TO C. Iii. HALL LAMP COMFANY, A CORPGRA'IION OF IEICHIGATNFroousrirc LAMP.

Application filed December 28, 1925. Serial No. 77,923.

My invention relates to the general type of headlights in which a lampsocket is mounted so as to be slidable longitudinally of the reflector,and in which the reflector is movable with respect to the lamp casing.Generally speaking, my invention aims to provide simple, easilyassembled and inexpensive focusing means for moving the socketlongitudinally, and also provides spring means operating through a partof the focusing means for pressing the reflector against the door of thelamp.

For a part of these purposes, my invention provides a lamp constructionin which the focusing adjustment is made by a member threadedlyconnected to the socket and extending slidably through the back of thecasing in axial alinement with the socket, and in which a thrust memberoperatively secured to the reflector prevents a longitudinal movement ofthe threaded member in one direction, while a spring operativelyinterposed between the socket and the thrust member holds the latter inengagement with a portion of the threaded member. It also provides a.spring interposed between the thrust member and the casing for holdingthe reflector in tight sealing relation to the lamp door.

More particularly, my invention provides means for adjusting a lampsocket with re spect to a sleeve in which the socket is slidablydisposed, and for this purpose includes a thrust-receiving yoke attachedto the sleeve and cooperating with the lamp casing in guiding thefocus-adjusting member. It also provides a construction for this purposein which the yoke can readily be at tached to the sleeve while the yokeis in an inoperative position, and in which the yoke is held pivotallyinterlocked with the sleeve when in its operative position so as to permit the focus-adjusting member to aline with the socket without crampingthe socket in. the sleeve.

In its immediate commercial applications, my invention is particularlyadapted for use in automobile headlights of the general type in whichthe reflector is floatingly. supported with respect to the lamp casingand in which the lamp socket is carried by the reflector. Hence I amillustrating and describing my invention in such an embodiment in thefollowing specification and the accompanying drawings from both of whichFig. 3 is an enlarged and fragmentary sec tion, taken along the line 3-3of Fig. 2.

Fig. is a view of the socket-carrying sleeve and adjacent parts, lookingupward from the line 44: ofFig. 1, but with the yoke. swung to theinoperative position in which it permits a ready insertion of the socketin the sleeve.

Fig. 5 is an enlarged section, taken along the line 5-5 of Fig. 1. V

Fig. 6 is a view similar to Fig. 2, but showing another embodiment of myinvention, namely one in which the sleeve has projecting earsinterlocking with the arms of the yoke.

Fig. 7 is a bottom plan view of the same embodiment, taken from the line77 of Fig. 6, with the yoke swung to the inoperative position in whichit is detachable from the sleeve.

Figure 8 is an enlarged end view of the same embodiment, taken from therighthand end of Fig. 7.

Fig. 9 is a view similar to Fig. 6,'but looking in the oppositedirection and with the yoke omitted, showing the ears on the sleeve.

Fig. 10 is an enlarged section taken along the line 1010 of Fig. 6.

Figure 11 is a section similar to Fig. 10, but showing the yoke in itsattaching position.

Referring first to Fig. 1, this shows an automobile headli ht in whichthe body 1 of the casing is contracted at its forward end to fit thelens ring 2 of a door which includes the usual lens 3. The door isrigidly secured to the body 1 by any suitable means, as for example byscrews connecting ears welded respectively to the doorand the body, suchas the screw 17 connecting the ears 37 and 32 of Fig. 1. The body 1 alsohas an inwardly directed radial flange 4 disposed at some distancebehind the radial rim flange .5 of the reflector 6, and the body flanget carries guide screws 7 which extend through corresponding perforationsin the reflector flange 5 to guide the reflector, each screw having itshead 34 normally spaced forwardly from the reflector to act as a stopfor retaining the reflector in the lamp body when the door detached. Apacking ring 8 is disposed bet-ween this reflector flange F and thelens, the reflector being continuously pressed toward the lens by meanshereafter described.

Secured to the central portion ot/ the reflector 6 and desirably coax? iwith the re Hector a sleeve 10 which serves as a. support and. guide forthe lamp soc-hot shell ii. For this purpose. the {generally cylindricaltubular sleeve 10 may have a peripheral head 12 formed near its forwardend for engaging; the rear of ti 0 reflector, as shown in Fig. 5. andthe forward end of the sleeve may then he spun ()llbll'ttl'tl to providea flange l3 cl..-in'1p....ig the reflector against the h )tttl 12.

The socket shell 11, which normally supports the usual hin'ip bulb 13,extends slidably through the said guide sleeve it). A iraclict stem l-l;soldered to one side of the ocltct shell and longitudinal edges of aslot 15 formed in the guide sleeve. so as to prevent the lamp )chct"ti-om rotating in the sleeve. The racket stem lit has its rear portionbout a right. angles and attending across the axis oi: the socket asshown in FlfIS. 4i and so as to present a thrust portion which isofft'cct'ively a rigid partof the lamp socket.

Secured to the guide sleeve 10 is a thrustrcc 'ing' momlgier which den"ably is in the for n of :1 yohc having its two arms secu ed to he sleeveand having its lj)l.',1l1t 17 dicposcd at some tils 'illltitliiflilitltlm thrust ortiou 17; of ti no c';ct ldxteudinzt "through these pan is ind i? is l-wusadjusting member '18. which t. sirahiy is threaded thx -1th rt e bracket portion cc 7': vcly swi 've led lip-T111 the soclict whoil ii' oi: thi guslte. To ati oru t is sw "cling connert' =11. line =1empi y a l! c 19 extend q trans ersely through ting member 18 andhcarimr against the rear face of the bio-ht l7. and interpose a(10lTl'')ltIi in}; 20 betwcei'i the bracket (or thrust portion! of thesec rot and the slidably guided by the the reflector forwardly agrns thep ring 8, thereby insuring a Hill; set; the mouth of the reflector bythe door.

To co meet the yoke l6 operatirci with the guide sleeve it) whilepermitting a rarity rtino' oil. the 5: j in the sleeve. l pret .1 7 *ot...'..e a of the to the sleerc. For this mrprrse Fig. arm 16 of the yokeas having a c. ular p. t' t rd. the other arm by a. partial pui'ichiugoperation, and shows the iailcerc. 10 as provided with oppositepcrtin'atious tit-ting these circular nulls 25. It also shows a spring;clip 236 having oopt ed nuhs s? respectively entering the recesses1noduccd in the yoke arms 16 by the said punching operations, this cliphaving a contracting tentlcn-cj,- so as to hold the nuhs :--'r';\','lcted in the g'icriorations of the sleeve. ll' hcn the spring); clip isdetached, the arms of the yoke can readily be sprung apart to releasethe nuhs from the sic-eve. the yolie can initially he attac d sleeve inthe pi sition shown in l 4, so as not tointerterc with the inserting ofthe socket ll into the sleeve. When attached. the yoke is pivoted to thesleeve, thas perlack of exactness in alining these, thereby preventingthe socket from cramping in the sleeve.

lVith the parts thus arranged rotation of the adjusting member in eitherdirection wi l move the sochet either forward or rearward. the head 21of this member being, easily accessible for this purpose by extendthrough (or at least into) a suitable per 3t! :ation in the rear end ofthe amp body, and my licensing device can easily be adept ed to hnupbodies o't vr'irying lenq'ths lay merely varying the length of theadjusting member 18.

However, I do not wish to be limited to the details of the constructionand arrangeirent heretofore described, since many changes mightobviously be made without departing either from the spirit of myinvention or from the appended claims.

For example Figs. 6 to 11 show an embodiment in which a pair of oppositeprojecting and substantially T-shaped cars 33 are formed from the guidesleeve 10*, and in which. each arm 16 of the yoke has a peritoration 34."Each of these perfoations is formed so that the head of one car 33 canvreadily he slipped through it when the yoke is in the position ot Fig.7. and so that :1 part of the yoke will be interposed between the sleeve10 and the head of each ear when the yoke is in its normal position ofFig. 6.

So also, I do not wish to be limited to the use of my focusing): devicein connection with a spring operating through it. for urging the z. is

reflector forwardly, F or example, Fig. (3 shows the operating member 18as having an integral collar 35 engaging the bight 17 of the yoke andheld against this bi 'ht by the spring 20. In either case, the spring520 can be quite light, but a heavier spr' is dosirable for the springwhen this is used. as the latter opcrates through the yrd-ze and sleevefor pressing the reflcctm' and the packing ring 8 inst the lens. Sincethe entire focusing arrangement is oporativcl; carried by the reflector,the latter is free to be moved by the spring 2% without altering thefocusing adjustment.

The bracket comprising the parts 1% and 15 is effectively a rigid partof the socket, although here illustrated as separately formed, hence thesocket together with this bracket constitute a rigid socket member.

I claim as my invention:

-l. In a lamp, a reflector, a sleeve fast upon and extending axially ofthe reflector, a lamp-bulb socket slidable in the sleeve, a yoke havingits arms secured to the sleeve and having its bight disposed behind thesocket, a bracket fastened to the socket and having a portion disposedbetween the socket and the bight of the yoke, an adjusting memberextending slidably through the bight of the yoke and threadedlyconnected to the bracket, the adjusting member having a part engagingthe rear face of the bight, and a compression spring operativelyinterposed between the socket and the forward. face of the bight.

2. I11 a lamp, a reflector, a sleeve extending rearwardly from thereflector, a lampbulb socket slidable in the sleeve, a yoke having itsarms pivotally connected to the sleeve on an axis transverse of thesocket; a lamp body housing the reflector, sleeve and yoke; and threadedmeans interposed between the socket and the yoke for sliding the socketwith respect to the sleeve, the threaded means extending through thebight of the yoke and extending slidable through the body so that thesaid extension of the threaded means through the body and yoke cooperatewith the threaded connection of the threaded means to the socket forpreventing movement of the yoke about the said pivoted connection of theyoke to the sleeve.

3. In a lamp, a casing, a reflect-or supported in the casing formovement forwardly and rearwardly of the casing, a sleeve fast upon andextending rearwardly from the reflector, a lamp-socket extendingslidably through the sleeve and including a. thrust portion extendingacross the axis of the socket, the casing having a perforation in itsback alined'with the axis of the socket, a thrust member connected tothe sleeve to prevent forward or rearward movement thereof with respectto the sleeve, the

thrust member having a thrust receiving portion extending across theaxis of the socket and disposed at some distance behind the said thrustportion of the socket, and. an adjusting member extending through andswiveled upon the thrust receiving portion of the thrust member andthreaded through the thrust portion of the socket, the adjusting memberextending slidably through the said perforation in the back of thecasing.

at. In a lamp, a reflector, a tubular guide fast upon the reflector andextending rearwardly from the reflector, a socket member slidablycarried by the guide, a casing having a perforation in axial alinementwith the socket member, a thrust member so connected to the guide as toprevent movement of the thrust member longitudinally of the socketmember; and an adjusting member extending slidably through theperforation in the casing; the adjusting member extending through boththe thrust member and a portion of the socket member and beingrespectively swiveled upon one and threadedly connected to the otherthereof.

5. In a lamp, a reflector member including a reflector and a rearwardlyextending guide fast on the reflector, a lamp-socket supported by theguide for movement axially of the reflector and having a thrust portionextending across the axis of the reflector, athrust member pivoted atits forward end to the guide and having a rearward portion extendingacross the said axis behind the thrust portion of the socket, anadjusting member extending through and swiveled upon the rearwardportion of the guide member and threaded through the thrust portion ofthe socket, and a lamp body housing the reflector and having a rigidportion thereof slidably guiding the adjusting member behind the thrustmember.

6. In a lamp, a reflector, a sleeve fast upon the reflector, alamp-socket slidable in the sleeve, a yoke straddling the rear end ofthe sleeve and having its arms respectively pivoted to opposite sides ofthe sleeve, the yoke having its bight disposed behind the socket,yielding means for holding the said arms in pivoted engagement with thesleeve, and threaded means interposed between the socket and the bightof the yoke for sliding the socket with respect to the sleeve.

7. In a lamp, a reflector, a tubular guide extending rearwardly from thereflector, the guide having oppositely disposed lateral perforations, alamp-socket slidable in the guide, a yoke freely straddling the rear endof the guide and having its arms provided with oppositely directedfingers respectively entering the said perforations, a detachableretaining member engaging the outer faces of the arms to hold thefingers in the perforations, and an adjusting member interposed betweenthe socket and the bight oi the yoke, the adjusting member beingswiveled upon one and threadedly conneeted to the other of the partsbetween it is thus interposed.

8. A lamp construction as per claim T, in: which the retaining memberhas projections directed toward each other, and in which each arm has aportion offset toward the other arm so as to afford one of the 10 saidfingers and so as to provide an outward-- 1y open recess entered by oneof the projections on the retaining member.

Signed at Detroit, Michigan, December CHARLES E. GODLEY.

